package org.kunteng.yunac.lttask.uitls;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

import java.io.File;

/**
 * Created by hedingwei on 2015/2/4.
 */
public class Application implements ApplicationContextAware {

    private static ApplicationContext applicationContext;     //Spring应用上下文环境

    private static File workingDir = new File("../");

    private static File tmpDir = new File("../temp");

    private static File confDir = new File("../conf");

    private static File dataDir = new File("../data");

    /**
     * 实现ApplicationContextAware接口的回调方法，设置上下文环境
     * @param applicationContext
     * @throws org.springframework.beans.BeansException
     */
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        Application.applicationContext = applicationContext;
    }

    /**
     * @return ApplicationContext
     */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /**
     * 获取对象
     * @param name
     * @return Object 一个以所给名字注册的bean的实例
     * @throws org.springframework.beans.BeansException
     */
    public static Object getBean(String name) throws BeansException {
        return applicationContext.getBean(name);
    }

    /**
     * 获取类型为requiredType的对象
     * 如果bean不能被类型转换，相应的异常将会被抛出（BeanNotOfRequiredTypeException）
     * @param name       bean注册名
     * @param requiredType 返回对象类型
     * @return Object 返回requiredType类型对象
     * @throws org.springframework.beans.BeansException
     */
    public static Object getBean(String name, Class requiredType) throws BeansException {
        return applicationContext.getBean(name, requiredType);
    }

    /**
     * 如果BeanFactory包含一个与所给名称匹配的bean定义，则返回true
     * @param name
     * @return boolean
     */
    public static boolean containsBean(String name) {
        return applicationContext.containsBean(name);
    }

    /**
     * 判断以给定名字注册的bean定义是一个singleton还是一个prototype。
     * 如果与给定名字相应的bean定义没有被找到，将会抛出一个异常（NoSuchBeanDefinitionException）
     * @param name
     * @return boolean
     * @throws org.springframework.beans.factory.NoSuchBeanDefinitionException
     */
    public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {
        return applicationContext.isSingleton(name);
    }

    /**
     * @param name
     * @return Class 注册对象的类型
     * @throws org.springframework.beans.factory.NoSuchBeanDefinitionException
     */
    public static Class getType(String name) throws NoSuchBeanDefinitionException {
        return applicationContext.getType(name);
    }

    /**
     * 如果给定的bean名字在bean定义中有别名，则返回这些别名
     * @param name
     * @return
     * @throws org.springframework.beans.factory.NoSuchBeanDefinitionException
     */
    public static String[] getAliases(String name) throws NoSuchBeanDefinitionException {
        return applicationContext.getAliases(name);
    }

    public static File getWorkingDir(){
        return workingDir;
    }

    public static File getTmpDir(){
        if(!tmpDir.exists()){
            tmpDir.mkdirs();
        }
        return tmpDir;
    }


    public static File getConfDir(){
        if(!confDir.exists()){
            confDir.mkdirs();
        }
        return confDir;
    }

    public static File getDataDir(){
        if(!dataDir.exists()){
            dataDir.mkdirs();
        }
        return dataDir;
    }




}
